2066551907 has 16 divisors (see below), whose sum is σ = 2384106240. Its totient is φ = 1754651808.

The previous prime is 2066551901. The next prime is 2066551937. The reversal of 2066551907 is 7091556602.

It is not a de Polignac number, because 2066551907 - 2¹² = 2066547811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066551901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378644 + ... + 384062.

It is an arithmetic number, because the mean of its divisors is an integer number (149006640).

Almost surely, 2^2066551907 is an apocalyptic number.

2066551907 is a deficient number, since it is larger than the sum of its proper divisors (317554333).

2066551907 is a wasteful number, since it uses less digits than its factorization.

2066551907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 2066551907 is about 45459.3434510443. The cubic root of 2066551907 is about 1273.7438674629.

The spelling of 2066551907 in words is "two billion, sixty-six million, five hundred fifty-one thousand, nine hundred seven".